Robekt bailey



geiten tetes atnt @ffice IMPROVEMENT 'IN STEAM GENERATORS.

613112 rlgrhtle raamt in in tiges: etim nimt ma making gaat nf tipsinne.

TO ALL WHOM` IT MAY CONCERN:

Be -it known that I, ROBERT BAILEY, of Idaho City, in the county ofBoise, and Territory of Idaho, have invented a new and usefulImprovement in Steam Boilers; and I do hereby declare that the followingis a full: clear, and exact description thereof, which will enableothers skilled in the art to make and use the same, reference being hadto the accompanying drawings, forming part of this specification, inwhich- .Figure 1 is a side elevation of the boiler.

Figuren? is a vertical section of theboiler taken in the plane of theline :z: x, fig. 4.

Figure 3 is a horizontal section of the boiler taken in the plane of theline y y, g. 1.

Figure 4 is ahorizontal section of the boiler taken in the plane of theline z z, iig. 2.

Similar letters of reference indicate like parts.

This invention relates to improvements in a steam'boiler, and consistsin constructing it in sections in such manner that it may be readilyopened and taken apart forrepairing or cleaning the ire dues and spacesin the different sectional parts, which fire ilue and spaces are sodivided and arranged asto present an immense amount of re surface inproportion to the size and weight of the boiler, compared with ordinaryboilers. The boiler, as a whole, is very compact and strong, andalthough it may be advantageously used anywhere, it is particularlyadapted to mining purposes in distant interior localities, wheretransportation is diicult and expensive, on account of its weight beingcomparatively small and the great portability it possesses by divisioninto sections. My sectional boiler has two principal parts dividedvertically, each principal part being also divided into two diiierentsections,

In fig. 1, A`A represent the two principal parts or sections, each oflwhich is divided into two sections, BB', as shown clearly in fig. 2. Theire grate C extends under both principal sections, and between them is avertical ire space D, over the-lire chamber E, which leadsdirectly intothe exit ilue F, at the top of the boiler. The'central subdivisions orsections, B B', on each side of the re space D, have running throughthem a series of horizontal or nearly horizontal tubular fire dues a aa. The outside jackets or sections, B B',Imay be modified in theirconstruction as represented in the drawings, Awherein are shown twomodes of arranging the ilues and ire spaces; one of these sections beingbuilt with tubular fire ilues running through water compartments, andthe other with a dat fire space or ilue between two dat watercompartments, either of whichmethods of construction may be adapted inmy sectional boiler. In figs. 2 3 4, b b b, are seen the tubular irei'lues passing transversely through the water compartments e c, of onesection, between which is also a larger lire space d; and in theothersection is seen the flat iire ilue e, between the watercompartments And between both sections B' B', are lire spaces e' e. Thetwo outer sections or jackets B B, are pivoted to the central sectionsB' B', through trun# nions at their lower ends by rods g g which pass`through the shells on each side of lthe boiler, allowing the jacketsections to be opened outward Vreadily for the purpose of repairing andcleaning the scale and ashes in the fire ilues and spaces whennecessary, as'shown by fig. 1, in red. The central sections B' B' may bemade with water compartments iz', extending 'outside of the jacketsections and enclosing fire spaces jj between them, as

shown in figs. 3 and 4. The grate bars c c are made hollow, with theirends opening into the central sections B' B', as shown in fig. 3, sothat the water in the boiler shall circulate through them.- At the upperend of the fire space D is a damper, k, opening into the exit due F.This damper may be opened for direct draught when the fire is kindled,but for making steam it is closed, whenthe products of combustion willpassindirectly to the exit flue through all the lire ilues and spaces,as indicated by the arrows, fig. 2, and thus act upon a very largeextent of fire surface, and make steam very rapidly with'a smallconsumption of fuel. The boiler may have doors m opening into the firechamber on both sides; the feed pipes n n connect with each sectionofthe boiler, and the steam pipes s s lead from each section to a commonsteam pipe connected with the steam cylinder of the engine. Gauge cockst t are placed on all the sections of the boiler.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, is-

1. I claim a sectional-steam boiler divided into four principal parts,two central sections B B', and two external jackets B B, constructed,combined, and arranged as herein described.

2. I claim ,the combination of the hollow grate bars with thecentralseetions B' B', and the jackets B4B,

arranged and connected as herein described.

3.' I claim the damper c, for giving direct or indirect draught throughthe boiler, in combination with the fire spaces D and e e', and the exitilue F, arranged and operating as and for the purposes herein described.ROBERT BAILEY..

Witnesses JAMES W. GRIFFIN, B. M. DU HELL.

